Control: reassign -1 src:llvm-toolchain-3.9 1:3.9.1-5 Control: block 848258 by -1 Control: forwarded -1 https://bugs.llvm.org/show_bug.cgi?id=30217
On Mon, Mar 13, 2017 at 05:32:40AM -0700, Ian Bruce wrote: > Package: mesa-opencl-icd > Version: 13.0.5-1 > Severity: important > Tags: upstream patch > > LLVM versions before v5 contain a known language bug, involving the use > of pointers as boolean values, which makes them essentially unusable for > openCL: > > https://bugs.llvm.org/show_bug.cgi?id=30217 > > https://reviews.llvm.org/D29038 > > https://reviews.llvm.org/rL294313 > > For an example of the problems this causes, see here: > > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=848258 > > https://developer.blender.org/T50522 > > a trivial test case illustrating the bug: > > > $ cat ptr-expr2.c > int ptr_expr(int *p) > { > if (!p) > return(0); > else > return(1); > } > > $ clang-3.9 -x cl -emit-llvm -S ptr-expr2.c > ptr-expr2.c:3:9: error: invalid argument type 'int *' to unary expression > if (!p) > ^~ > 1 error generated. > > $ clang-4.0 -x cl -emit-llvm -S ptr-expr2.c > ptr-expr2.c:3:9: error: invalid argument type 'int *' to unary expression > if (!p) > ^~ > 1 error generated. > > $ clang-5.0 -x cl -emit-llvm -S ptr-expr2.c > $ # compilation succeeds > > > possible solutions: > > - make openCL require LLVM-v5 > > - backport the bugfix from LLVM-v5 to earlier versions; > it is apparently a single line change (see LLVM link above) Dear LLVM maintainers, please cherry-pick r294313 for llvm-3.9 and llvm-4.0. Thanks, Andreas > Until one or other of these solutions is applied, openCL in Mesa is > effectively unusable. > > > > -- System Information: > Debian Release: 9.0 > APT prefers testing > APT policy: (990, 'testing'), (500, 'stable-updates'), (500, 'unstable'), > (500, 'stable') > Architecture: amd64 (x86_64) > > Kernel: Linux 4.9.0-2-amd64 (SMP w/4 CPU cores) > Locale: LANG=en_CA.utf8, LC_CTYPE=en_CA.utf8 (charmap=UTF-8) > Shell: /bin/sh linked to /bin/dash > Init: systemd (via /run/systemd/system) > > Versions of packages mesa-opencl-icd depends on: > ii libc6 2.24-9 > ii libclc-amdgcn 0.2.0+git20160907-3 > ii libclc-r600 0.2.0+git20160907-3 > ii libdrm-amdgpu1 2.4.74-1 > ii libdrm-nouveau2 2.4.74-1 > ii libdrm-radeon1 2.4.74-1 > ii libdrm2 2.4.74-1 > ii libelf1 0.168-0.2 > ii libexpat1 2.2.0-2 > ii libgcc1 1:6.3.0-6 > ii libgcrypt20 1.7.6-1 > ii libllvm3.9 1:3.9.1-4 > ii libsensors4 1:3.4.0-3+b1 > ii libstdc++6 6.3.0-6 > ii ocl-icd-libopencl1 [libopencl1] 2.2.11-1 > > mesa-opencl-icd recommends no packages. > > mesa-opencl-icd suggests no packages. > > Versions of packages xserver-xorg depends on: > ii x11-xkb-utils 7.7+3+b1 > ii xkb-data 2.19-1 > ii xserver-xorg-core 2:1.19.2-1 > ii xserver-xorg-input-evdev [xorg-driver-input] 1:2.10.5-1 > ii xserver-xorg-video-radeon [xorg-driver-video] 1:7.8.0-1+b1 > > Versions of packages xserver-xorg recommends: > ii libgl1-mesa-dri 13.0.5-1 > > Versions of packages xserver-xorg-core depends on: > ii keyboard-configuration 1.160 > ii libaudit1 1:2.6.7-1 > ii libbsd0 0.8.3-1 > ii libc6 2.24-9 > ii libdbus-1-3 1.10.16-1 > ii libdrm2 2.4.74-1 > ii libegl1-mesa 13.0.5-1 > ii libepoxy0 1.3.1-2 > ii libgbm1 13.0.5-1 > ii libgcrypt20 1.7.6-1 > ii libgl1-mesa-glx [libgl1] 13.0.5-1 > ii libpciaccess0 0.13.4-1 > ii libpixman-1-0 0.34.0-1 > ii libselinux1 2.6-3 > ii libsystemd0 232-19 > ii libudev1 232-19 > ii libxau6 1:1.0.8-1 > ii libxdmcp6 1:1.1.2-3 > ii libxfont2 1:2.0.1-3 > ii libxshmfence1 1.2-1 > ii udev 232-19 > ii xserver-common 2:1.19.2-1 > > Versions of packages xserver-xorg-core recommends: > ii libgl1-mesa-dri 13.0.5-1 > ii libpam-systemd 232-19 > > Versions of packages xserver-xorg-core suggests: > ii xfonts-100dpi 1:1.0.4+nmu1 > ii xfonts-75dpi 1:1.0.4+nmu1 > ii xfonts-scalable 1:1.0.3-1.1 > > -- no debconf information
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